Commit 6bfcc3e1 authored by Paul Querna's avatar Paul Querna
Browse files

- Add defines for most common FastCGI values. 

- Add basic structures, defined in the FastCGI Spec.
- Write a request to the server.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/fcgi-proxy-dev@358719 13f79535-47bb-0310-9956-ffa450edef68
parent cc0c958e

modules/proxy/mod_proxy_fcgi.c

+83 −1
Original line number Diff line number Diff line
@@ -79,6 +79,51 @@ static int proxy_fcgi_canon(request_rec *r, char *url) 
    return OK;

}



#define FCGI_VERSION 1



#define FCGI_BEGIN_REQUEST       1

#define FCGI_ABORT_REQUEST       2

#define FCGI_END_REQUEST         3

#define FCGI_PARAMS              4

#define FCGI_STDIN               5

#define FCGI_STDOUT              6

#define FCGI_STDERR              7

#define FCGI_DATA                8

#define FCGI_GET_VALUES          9

#define FCGI_GET_VALUES_RESULT  10

#define FCGI_UNKNOWN_TYPE       11

#define FCGI_MAXTYPE (FCGI_UNKNOWN_TYPE)



typedef struct {

    unsigned char version;

    unsigned char type;

    unsigned char requestIdB1;

    unsigned char requestIdB0;

    unsigned char contentLengthB1;

    unsigned char contentLengthB0;

    unsigned char paddingLength;

    unsigned char reserved;

} fcgi_header;



/*

 * Mask for flags component of FCGI_BeginRequestBody

 */

#define FCGI_KEEP_CONN  1



/*

 * Values for role component of FCGI_BeginRequestBody

 */

#define FCGI_RESPONDER  1

#define FCGI_AUTHORIZER 2

#define FCGI_FILTER     3



typedef struct {

    unsigned char roleB1;

    unsigned char roleB0;

    unsigned char flags;

    unsigned char reserved[5];

} fcgi_begin_request_body;



/*

 * process the request and write the response.

 */
@@ -89,7 +134,44 @@ static int fcgi_do_request(apr_pool_t *p, request_rec *r, 
                            apr_uri_t *uri,

                            char *url, char *server_portstr)

{

    /* TODO: Talk to a FastCGI Backend */

    apr_status_t rv;



    {

        struct iovec vec[2];

        fcgi_header header;

        fcgi_begin_request_body brb;

    

        /* Step 1: Send FCGI_BEGIN_REQUEST */

        header.version = FCGI_VERSION;

        header.type = FCGI_BEGIN_REQUEST;

        header.requestIdB1 = ((1 >> 8) & 0xff);

        header.requestIdB0 = ((1) & 0xff); 

        header.contentLengthB1 = ((sizeof(brb) >> 8) & 0xff);

        header.contentLengthB0 = ((sizeof(brb)) & 0xff); 

        header.paddingLength = 0;

    

        brb.roleB1 = ((FCGI_RESPONDER >> 8) & 0xff);

        brb.roleB0 = ((FCGI_RESPONDER) & 0xff); 

        brb.flags = FCGI_KEEP_CONN;



        vec[0].iov_base = &header;

        vec[0].iov_len = sizeof(header);

        vec[1].iov_base = &brb;

        vec[1].iov_len = sizeof(brb);



        rv = apr_socket_sendv(conn->sock, vec, 2, NULL);

        if (rv != APR_SUCCESS) {

            ap_log_error(APLOG_MARK, APLOG_DEBUG, rv, r->server,

                         "proxy: FCGI: Failed Writing Request to %s:", server_portstr);

        }

    }

    

    /* Step 2: Send Enviroment via FCGI_PARAMS */

    /* Step 3: Send Request Body via FCGI_STDIN */

    /* Step 4: Read for CGI_STDOUT|CGI_STDERR */

    /* Step 5: Parse reply headers. */

    /* Step 6: Stream reply body. */

    /* Step 7: Read FCGI_END_REQUEST -> Done */

    return HTTP_SERVICE_UNAVAILABLE;

}